Java
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Java – is it correct to use ArrayList or LinkedList instead of list when declaring variables / parameters?
See English answers > type list vs type ArrayList in Java 15 public class foo { private List<String> fooT…… -
Multithreading – passing qlist * to signals from qthread
In my QT application, I have a class called from an object running in a thread In my worker class, I created qlist, ju…… -
Java – object initialization using interfacetype
I've just come into contact with the Java programming language I have been programming in c# for two years When I brow…… -
Java – JScrollPane ‘lazy’ scrolling, containing many components
I have a 3045 form! Components (1015 labels, 1015 text fields, 1015 combo boxes) All of these are in JPanel and JPanel…… -
Java – binary search is not applicable to doubles
This program applies to integers, but not doubles There was no error, but the program returned - 1 Sorry, if this is a…… -
Java – data structure with key value mapping and sorting
I need a data structure that provides key value mapping, such as map, but this also allows me to obtain keys based on …… -
Java – directional path in neo4j
I am faced with a seemingly simple problem I want to use the Java API to traverse the nodes of the neo4j graph However…… -
Java – can I set getaddrinfo timeout for defaulthttpclient in Android?
In the Android application, I try to test whether the user has an available Internet connection If you are interested,…… -
How to resize button text – swing in Java
I'm new here and have taken my first step in Java For learning purposes, I'm trying to create a simple GUI using a gri…… -
Java running program at command prompt: main class not found or loaded
I'm trying to learn how to compile and run using only the command line in windows This is the directory tree from the …… -
What’s wrong with defining a Java class with an array of elements of that class as one of its fields?
My application model is composed of disorders, each of which has innate attributes (identity, name, incidence rate, et…… -
java – Spring LDAP NullPointerException
I am using java spring version 1.3 1-RELEASE. There appears to be a problem with ldaptemplate when trying to perform a…… -
java – Pom. XML project build error
I imported the Maven project into my eclipse, but I did it in POM The following errors were encountered in XML – I hav…… -
Java backward compatibility description
I have a Java class file I compiled with JVM 7 I implemented Java 1.7 additions, such as string switchcase and diamond…… -
Java – delete duplicates from ArrayList?
How do I remove duplicates from ArrayList? I have getccnptags array as [Java, PHP, C, Java, PHP]. I get the hyperlink …… -
The Java Sudoku generator does not work properly
I've been using Sudoku puzzle generator in Java. I wrote this class to generate puzzles, but it doesn't generate puzzl…… -
Java – use webdriver to click the link in the newly opened tab
Someone can help me in this situation: The scenario is: there is a web page, and I only open all specified links in th…… -
Java – ws4j returns infinity for the similarity measure that should return 1
I have a very simple code from this example. I use Lin, path and Wu Palmer similarity measures to calculate the simila…… -
Java – I can’t create a default constructor from a class that extends dialogfragment, and I’ve created my own custom constructor
I'm confused about the error message about the default constructor I have two classes mainactivity and resultdialog So…… -
java-ee – EJB3：orm. XML: can I have multiple orm XML file?
I work on a large EJB3 project, my orm XML is also very big Thanks for your help:) Solution orm. XML does not contain …… -
Variable length STD in VHDL_ logic_ Vector initialization
I have a variable length vector STD_ logic_ vector(X downto 0). Now I try to define a constant in my package for reset…… -
Why does Java HashMap get (key) faster than using set’s iterator to read the key when using the same HashMap iterator?
For HashMap < integer, integer >, after inserting 10000000 unique random values I use HashMap's keyset () to exe…… -
Java – eclipse – > run as – > run on the server – how do I make it run with JBoss?
I use eclipse Juno, and I have done two projects: >One of them is actually an ear containing EJB projects and a pro…… -
Java – search the eclipse outline for a specific return type
I have a huge Java class and I want to see all the methods that return myowndatatype I see a method in which a person …… -
How do I find a running Java virtual machine on my computer?
I want to know which JVM I am using when I run a java program from the command prompt Is there a CMD command that can …… -
Java – how to find which Maven dependencies are missing
I have a web project and a POM XML file It has enough dependencies to compile and package, but not enough to start the…… -
Java – use wildcards to search in the string collection
I have a HashMap < integer, string > I tried the following code to query the map and return all possible values …… -
Java inaccessible wsdlexception when accessing WSDL through client stub
I'm trying to write a custom java client for exchange web services Exception in thread "main" com.sun.xml.internal.ws.…… -
Java – the watershed in opencv Android
I try to implement the watershed function of OpenCV on Android But my program always crashes where the watershed funct…… -
Java – parse string date and time zone Eest EET
Parse the complete date toString(); @ H_ 502_ 7@ private final DateFormat dfFull = new SimpleDateFormat("EEE MMM dd HH…… -
Java collection is used for special scrolling and looping queues
I'm looking for something similar to concurrentlinkedqueue, but I have the following behavior: >When I view the () …… -
Java – JPA: even if the getter method is used, it will not load or delay loading I hope so?
Can you briefly explain what the following phrase means: My question is: >Does this mean that lazy may not be loade……